arch/mips/include/asm/spinlock.h

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Copyright (C) 1999, 2000, 06 Ralf Baechle (ralf@linux-mips.org)
   7  * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
   8  */
   9 #ifndef _ASM_SPINLOCK_H
  10 #define _ASM_SPINLOCK_H
  11
  12 #include <asm/processor.h>
  13 #include <asm/qrwlock.h>
  14
  15 #include <asm-generic/qspinlock_types.h>
  16
  17 #define queued_spin_unlock queued_spin_unlock
  18 /**
  19  * queued_spin_unlock - release a queued spinlock
  20  * @lock : Pointer to queued spinlock structure
  21  */
  22 static inline void queued_spin_unlock(struct qspinlock *lock)
  23 {
  24         /* This could be optimised with ARCH_HAS_MMIOWB */
  25         mmiowb();
  26         smp_store_release(&lock->locked, 0);
  27 }
  28
  29 #include <asm/qspinlock.h>
  30
  31 #endif /* _ASM_SPINLOCK_H */